Vehicle ventilator



May 26, 1925. 1,539,534

I. D. ANSELL VEHICLE YENTILATOR Filed June 1 1924 citizen of the UnitedStates, residing at Min- 1 new and useful Improvements in},Vehicle"Ventilators; andlfdo herebyl'declarethe following to be ai full, clea"and;exact: descrip; tion of the enventie e tains to makeand 'usethegamer- My invention, provides-am extremely ple and highlyefiicie'ntventilating device" lretemed meifze, 1925.

' UNITED ame ,lA T ENT OFFICE.

' rvairjrhansnnn, or mnmmoms, unmnsora.

vmncnn ivnnrma'roa' f Application m d J'uhe 1 '8,1994.' Serial No.720,808.

To all whom it may concern.

Be't knownpthat I, .IVAN D. ANsnnn, a

neapolis, in I the county 3 of-v Hennepin and Stateof Minnesota, haveinvented certain as v t-"eeeb others skilled inrtheart which;

especially adapted for application to; the

roofs of enclosed vehicles,such-. as :motor' buses and thelike. Thisimproved yentilating device operates under the .actionoisuction orpartial vacuum to draw the foul air from the tops of the car. Thesuction under the motion of the car is produced in a; marked degree bythe form and construction of the ventilator. Moreover, the ventilatoris' of such form that it-is storm-proof, that is,

rain cannot reach. the interior of the ,car therethrough even in.violent storms.

In the accompanying dravvingswhich ile lustrate the invention, likecharacters indi cate like parts throughout the several views.

' Fig. 2.

Of the parts of the bus, it is desirable only to particularly note theenclosed body 4;

havlngthe customary roof 5. One or more of these ventilating devices maybe applied'to the car roof and, moreover, such ventilatin devices mightbe applied even to the si es of the car, which latter-location, however,is not very desirable. For the purposes of this case, one of theventilating. devices will be described in detail. 4 V p The ventilatingdevice is preferably made in the form of a single shell=like casting,but

' it might be stamped or otherwise formed.

The shell-like body 6 of this ventilating device flares rearwardly invertical section, and

at its front end comes nearly to an edge. Preferably also, the-shellflares rearwar y at its sides from its closed fronttoward its- .edge ofthe bafiie open and relatively large rear end and it is provided on itsfront and side edges with outstanding anchoring'flanges 7 adapting it'tobe secured to the car roof by screws 8,

bolts or other suitable clamping devices,

which, when tightened, draw the anchorisg v flange so tightly againstthe roof top or covering as toform a water-tight joint. The

of the shell, at'its front portion, is away or formed with a largeopening 9 e atregisters with a large air passage 10 in i theg nar roof.Just rearward of its bottom openin 9, the bottom plate of the shell isforme' with an-abrup'tly raised baflie flange 11 that extendscompletelyacross.-the same and prevents "water romrunnin roof of the carinto the car throng the openings 9 and 10. The bottom'of the shell, rearcut away but, as shown andpreferably, it -is left solid. The top of theshell 6, at its ward of the flange 11, might be more orless from theraised rear end, is preferably reanwardly in- 1' clined and formeextends down nearly to the level :o the upper flange 11. Below theflange 12, the shell is formed with a rear end d1s- 1 charge passage 13.The sidesfof the shell,

close to the bafile flane 11 a'nd'close to .the rear bottom of the p ateof the shell, are

I with a rearwardly inclined bafiie flange 12 that will shed the rainrearwardly. This baflle flange 12 referably" formed with lateral drainor water discharge passages 14. I

As shown, a rather ornamental. metallic grid or damper plate 15 issecured to .the

car roof below the opening 10.

It is important to note that the shell above described has anapproximately flat to so that the shell, in all longitudinal sections,

has approximately the same inclination or.

pitch. Also, it will be noted that the air passages 9 and 10 are notround but approximate the rectangular in lan. These features combine togive the shel approximatelythe same air-conducting capacity at itsvarious 0 vertical longitudinal sect1ons,tliat is, for instance,at itslongitudinal center'and at its longitudinal sides. Moreover, it willalso be noted that the opening 13 atthe rear end of the shell and theair'pass'age in the shell above, the baflie flange 11 are approximatelyrectangular, so that the air will be discharged about equally at itsvarious differ-E v o.

ent vertical'cross. sections." This. revents.

concentration of a central stream 0 air and.

increases 'theefliciency of theventilatora Under forward movement of thecar, the shell, because of its forward inclination or gradual rearwardrise, will cut its Way through the air under ver slight resistance andwill raise the air an spread the same laterally, thereby producing apartial vacuum in the vicinity of the discharge opening 13, and thisWill produce a partial vacuum Within the shell and, hence, an outwardflow of foul air from the car. In a rain storm, very little water willbe dashed into the shell under the depending bafilc flange 12, but

any Water splashed into the rear portion of the shell Wlll beintercepted by the bafiie flange l1 and will run back out of the shellthroughthe opening 13. If the car be for-- very easily installed on abus,f ca r,' or any other enclosed moving vehicle;

What I claim is: a

1. A ventilating device in the form of a shell that flares rearwardly inlongitudinal section and terminates at its front end approximately in anedge, saidshell at its rear end having a depending rearwardly inclinedtransverse b'afiie flange and below said bafile flan e a transverse airpassage, said shell havmg a closed bottom with a large air passage atits front end and at the rear of said passage a raised baflie flange.

2. A ventilating device in the form of a shell that flares rearwardly inlongitudinal section and terminates at its front end approximately in anedge, said shell at its rear end having a depending rearwardly inclinedtransverse bafile flange and below said baffle flange a transverse airpassage, said shell havlng a closed bottom with a large air passage atits front end and at the rear of said shell eing approximately flat butinclined and the sides of said shell being approxipassa e a raisedbaflle flange, the top of said standing anchor flange adapting it to besecured to a roof by screws or the like.

3. A ventilating device in the form of a shell that flares rearwardly inlongitudinal section and terminates at its front end approximately in aned e, said shall at its rear end having a depending rearwardly inclinedtransverse bafile flange and'below said baflle flan e a transverse airpassage, said shell having a closed bottom with a large air passage atits front end and at the rear of said passage a raised bafileflange, thesaid shell at its sides having drain assages located close to its closedbottom and just at the rear of said raised'baflle flange.

In testimony whereof I aflix mg si ature.

IVAN D. I N. ELL.

